Alert archive / Texas / Wind Chill Advisories in 2017

Wind Chill Advisory 5, NWS Corpus Christi, TX

December 7, 201712 counties in Texas

NWS Corpus Christi, TX issued this wind chill advisory at Dec 7, 2017, 4:14 PM CST for 12 counties in Texas. It took effect at Dec 8, 2017, 12:00 AM CST. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Dec 7, 2017, 4:14 PM CST (22:14 UTC)
In effect from
Dec 8, 2017, 12:00 AM CST
Expired
Dec 8, 2017, 9:00 AM CST
In force
9 hr
Issued by
NWS Corpus Christi, TX

Counties Aransas County, TX, Bee County, TX, Calhoun County, TX, Duval County, TX, Goliad County, TX, Jim Wells County, TX, Kleberg County, TX, Live Oak County, TX, Nueces County, TX, Refugio County, TX, San Patricio County, TX, Victoria County, TX

The radar

The Corpus Christi radar (KCRP), 39 km from the middle of the area, began a volume at 22:18 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Brownsville Intl, TX (KBRO), launched 12:00Z, 10.2 hours before the alert went out and 249 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Brownsville Intl, TX at 12:00Z on 2017-12-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brownsville Intl, TX at 12:00Z on 2017-12-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 271 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
418 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
271 m²/s²
0-3 km storm-relative helicity
1076 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this wind chill advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Corpus Christi, TX wrote its last area forecast discussion before this wind chill advisory went out at Dec 7, 11:38 AM CST, 4 hours 36 minutes earlier.

Area forecast discussion, Dec 7, 11:38 AM CST, 4 hours 36 minutes before
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Hazardous weather outlook, Dec 7, 6:12 AM CST, 10 hours 2 minutes before
Hazardous Weather Outlook
National Weather Service Corpus Christi TX
612 AM CST Thu Dec 7 2017

TXZ229>234-239>247-081215-
La Salle-McMullen-Live Oak-Bee-Goliad-Victoria-Webb-Duval-
Jim Wells-Kleberg-Nueces-San Patricio-Aransas-Refugio-Calhoun-
612 AM CST Thu Dec 7 2017

This hazardous weather outlook is for South Texas and the Middle
Texas Coastal Waters.

.DAY ONE...Today and Tonight

A Winter Weather Advisory is in effect for Webb and Lasalle
counties from mid morning through early afternoon. Rain is
expected to change over to snow in these areas. Only light snow
accumulations are expected with minimal impacts.

There will be a chance for snow to mix with rain across much of
South Texas late tonight, mainly South of Hwy 181. Little to no
accumulation of snow is expected at this time with minimal
impacts.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Pockets of freezing temperatures are possible Saturday morning
around the Victoria Crossroads and the northern Brush Country.

Any residual moisture on area roadways and elevated surfaces may see
black ice develop.

.SPOTTER INFORMATION STATEMENT...

Any reports of frozen precipitation are welcome.

GMZ230-235-250-255-270-275-081215-
Bays and Waterways from Baffin Bay to Port Aransas-
Bays and Waterways from Port Aransas to Port O'Connor-
Coastal waters from Baffin Bay to Port Aransas out 20 NM-
Coastal waters from Port Aransas to Matagorda Ship Channel out
20 NM-Waters from Baffin Bay to Port Aransas from 20 to 60 NM-
Waters from Port Aransas to Matagorda Ship Channel from 20 to
60 NM-
612 AM CST Thu Dec 7 2017

This hazardous weather outlook is for South Texas and the Middle
Texas Coastal Waters.

.DAY ONE...Today and Tonight

Gale warning is in effect for Gulf Waters today and tonight for
very strong winds with gale force gusts. Small craft advisories
are in effect for the bays.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

A strong offshore flow will continue through Friday morning over the
Gulf waters. Small Craft Advisory will be needed for Friday as seas
will be slow to subside.

In the hours before

Local storm report, Dec 7, 11:36 AM CST, 4 hours 38 minutes before
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Local storm report, Dec 7, 1:49 PM CST, 2 hours 25 minutes before
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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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The office that day

Everything else NWS Corpus Christi, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 7, 5:53 AM CSTWinter Weather AdvisoryCRPLa Salle, McMullen, Webb20 hr
Dec 7, 11:44 AM CSTWinter Storm WarningCRPDuval, Jim Wells, Kleberg, Nueces, San Patricio21 hr
Dec 7, 11:44 AM CSTWinter Weather AdvisoryCRPAransas, Bee, Calhoun, Goliad, Live Oak, Refugio and 2 more18 hr
Dec 7, 2:50 PM CSTCoastal Flood AdvisoryCRPKleberg, Nueces8 hr

Nearby

Wind Chill Advisories in Texas, 2017Every wind chill advisory in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.